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2016-2020 Kia Optima Battery Replacement Guide

DIY Cost: $ 50 - 130
Est. Time: 10 mins
Difficulty: Easy

Summary

Step-by-step instructions on how to replace the battery on a 2016-2020 Kia Optima.

What you will need

Procedure

  1. Open the hood, pull the hood release under the dashboard and go to the vehicle's front.Hood release of 2016-2020 Kia Optima.Then unlock the hood latch and pull the hood up.Opened hood of the 2016-2020 Kia Optima.

     

  2. Locate the battery on the driver's side of the engine compartment.The battery of the 2016-2020 Kia Optima.

     

  3. Pull out the air duct above the battery by removing the two 10mm bolts connected to the bumper support bracket.Removing the air duct above the battery.

     

  4. Disconnect the positive and negative terminal of the battery, use a 10mm wrench to loosen the nuts on the terminals.Disconnect the positive and negative battery terminal.Disconnect the negative terminal first. Removing the positive and negative terminals of the battery.

     

  5. Loosen the 12mm bolt on the clamp below the battery.Removing the battery clamp out of the battery tray.Remove the clamp from the battery tray.Remove the clamp on the battery tray.

     

  6. Carry the battery out of the vehicle using the handles on the battery.Removing the battery of the 2016-2020 Kia Optima.

     

  7. Line up the new 12v battery back on the battery tray.Installing the new battery of the vehicle.

     

  8. Put the insulator on the new battery and reinstall the clamp on the battery tray.Put the insulator to the new battery.Reinstalling the clamp back to the battery tray.

    Make sure to put the clamp in the right position.

  9. Connect the positive and negative terminals of the battery. Connect the positive terminal first. Connect the negative terminal last.Reconnecting the terminals of the battery.

     

  10. Reinstall the air duct back on the vehicle.Reinstalling the air duct back to the vehicle.
  11. Start the engine. Then turn the steering wheel all the way to the left and then to the right twice to reset the steering angle sensor

Notes

  • Make sure the battery terminals are on tight. If the battery terminals are loose the battery may not charge properly. 
  • If the battery light stays on even with a new battery installed, there is a high chance the alterator is defective. 
2016-2020 Kia Optima Battery Replacement Guide What you will need AGM H7 12V Car battery - Cold-cranking amps: 850A 10mm wrench and socket 12mm socket, wrench, and extensions Procedure Open the hood, pull the hood release under the